IDENTITY PRESERVATION INSTRUCTION: Using the uploaded photo as reference, preserve the person's exact facial features, face shape, eye color, skin tone, and unique characteristics while transforming the image into a Soviet 1970s portrait style. Maintain complete facial likeness and identity throughout the transformation.

TRANSFORMATION DESCRIPTION: Apply authentic Soviet 1970s portrait photography style. The subject should be dressed in period-appropriate clothing typical of the 1970s Soviet Union (such as a simple button-up shirt, plain sweater, or modest dress). Hair should be styled in a classic 1970s manner - neat, conservative cuts for men (short sides, slightly longer on top) or soft, natural waves or straight styles for women, typical of the era. Background should be simple and functional, typical of Soviet studio photography - plain light gray, beige, or muted tones, possibly with subtle texture. Overall aesthetic should reflect the practical, documentary-style approach of Soviet photography with its characteristic color rendering and lighting.

STYLE AND AESTHETIC PARAMETERS:
- Photography style: Authentic Soviet 1970s portrait photography, documentary-style, slightly grainy film texture
- Lighting: Soft studio lighting with gentle fill light, characteristic of Soviet portrait photography - even illumination on face, minimal dramatic shadows, subtle catchlights in eyes
- Color palette: Muted, warm-toned color film aesthetic - slight desaturation, warm browns and ambers, soft yellows, characteristic of Soviet color film stock from the 1970s (like Tungsten-balanced film)
- Film grain: Subtle, authentic film grain consistent with 1970s analog photography
- Composition: Classic portrait composition, head and shoulders or waist-up shot, straight-on or slightly angled view
- Background: Plain, functional background in muted tones (light gray, beige, soft warm brown) with subtle texture, typical of Soviet studio portraits
- Facial features: Natural skin texture preserved, soft focus on skin while maintaining sharpness on key features, characteristic slightly flat lighting
- Period details: Authentic 1970s aesthetic without modern elements, conservative styling, practical clothing choices

TECHNICAL QUALITY PARAMETERS:
- High resolution, 4K, detailed
- Sharp focus on face while maintaining characteristic soft portrait quality
- Professional quality photo with authentic vintage aesthetic
- Aspect ratio: 3:4 or 4:5 (portrait orientation typical of studio photography)
- Film simulation: Authentic 1970s color film characteristics
- Texture detail: Preserved skin texture with subtle film grain overlay
- Color grading: Warm, slightly desaturated palette typical of Soviet-era color photography

NEGATIVE PROMPT GUIDANCE: Avoid: distorted features, unrealistic proportions, blurry face, loss of likeness, modern clothing, digital/artificial appearance, oversaturated colors, high-contrast digital look, Western fashion elements, contemporary hairstyles, modern backgrounds, excessive sharpness, HDR effect, neon colors, modern accessories, sunglasses, tattoos, piercings, bright unnatural lighting, studio lighting that looks too modern or harsh

USER CUSTOMIZATION: {additional_context}

ADDITIONAL TIPS: For best results, ensure your uploaded photo has good lighting on your face. You can specify in the customization section if you prefer a specific type of 1970s clothing (work uniform, student attire, casual wear) or if you want to emphasize certain period elements. The prompt maintains your identity while authentically recreating the visual style of Soviet 1970s portrait photography.